Serialises these Credentials into JSON.
Deserialises some Credentials from JSON.
Broadcaster-level Twitch key.
Google API OAuth access token.
Google client ID.
Google client secret.
Google API OAuth refresh token.
Spotify API OAuth access token.
Google client ID.
Google client secret.
Spotify playlist ID.
Spotify API OAuth refresh token.
YouTube playlist ID.
Credentials needed to access APIs like that of Google and Spotify.